FM Easy Suite Framework

The original developer that released fmEasySync and the other "Easy" products is no longer involved in the FileMaker community. His business has changed, so there is no active development on it, except the few forks on GitHub that other developers have picked up. But even those do really have any active changes to them recently.

The original developer released them not as a supported product like GoZync, MirrorSync, etc. They were merely "Open Source" tools that you could build on and use.